Photonic crystal fiber metalens
Conventional optical fiber has excellent performance in guiding light, which has been widely employed for long-distance optical communication. Although the optical fiber is efficient for transmitting light, its functionality is limited by the dielectric properties of the core’s and cladding’s materi...
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Online Access: | https://doi.org/10.1515/nanoph-2018-0204 |
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doaj-d7a80417f05d46adad186eefe904aea32021-09-06T19:20:32ZengDe GruyterNanophotonics2192-86062192-86142019-02-018344344910.1515/nanoph-2018-0204nanoph-2018-0204Photonic crystal fiber metalensYang Jingyi0Ghimire Indra1Wu Pin Chieh2Gurung Sudip3Arndt Catherine4Tsai Din Ping5Lee Ho Wai Howard6Department of Physics and Baylor Research and Innovation Collaborative (BRIC), Baylor University, Waco, TX 76798, USADepartment of Physics and Baylor Research and Innovation Collaborative (BRIC), Baylor University, Waco, TX 76798, USAResearch Center for Applied Sciences, Academia Sinica, Taipei 11529, TaiwanDepartment of Physics and Baylor Research and Innovation Collaborative (BRIC), Baylor University, Waco, TX 76798, USADepartment of Physics and Baylor Research and Innovation Collaborative (BRIC), Baylor University, Waco, TX 76798, USAResearch Center for Applied Sciences, Academia Sinica, Taipei 11529, TaiwanDepartment of Physics and Baylor Research and Innovation Collaborative (BRIC), Baylor University, Waco, TX 76798, USAConventional optical fiber has excellent performance in guiding light, which has been widely employed for long-distance optical communication. Although the optical fiber is efficient for transmitting light, its functionality is limited by the dielectric properties of the core’s and cladding’s materials (e.g. Ge-doped-silica and silica glasses). The spot size of the transmitted light is diverging and restricted by the diffraction limit of the dielectric core, and the numerical aperture is determined by the refractive index of the fiber materials. However, the novel technology of metasurfaces is opening the door to a variety of optical fiber innovations. Here, we report an ultrathin optical metalens directly patterned on the facet of a photonic crystal optical fiber that enables light focusing in the telecommunication regime. In-fiber metalenses with focal lengths of 28 μm and 40 μm at a wavelength of 1550 nm are demonstrated with maximum enhanced optical intensity as large as 234%. The ultrathin optical fiber metalens may find novel applications in optical imaging, sensing, and fiber laser designs.https://doi.org/10.1515/nanoph-2018-0204metasurfacesphotonic crystal fibersplasmonicsfiber optics components |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yang Jingyi Ghimire Indra Wu Pin Chieh Gurung Sudip Arndt Catherine Tsai Din Ping Lee Ho Wai Howard |
spellingShingle |
Yang Jingyi Ghimire Indra Wu Pin Chieh Gurung Sudip Arndt Catherine Tsai Din Ping Lee Ho Wai Howard Photonic crystal fiber metalens Nanophotonics metasurfaces photonic crystal fibers plasmonics fiber optics components |
author_facet |
Yang Jingyi Ghimire Indra Wu Pin Chieh Gurung Sudip Arndt Catherine Tsai Din Ping Lee Ho Wai Howard |
author_sort |
Yang Jingyi |
title |
Photonic crystal fiber metalens |
title_short |
Photonic crystal fiber metalens |
title_full |
Photonic crystal fiber metalens |
title_fullStr |
Photonic crystal fiber metalens |
title_full_unstemmed |
Photonic crystal fiber metalens |
title_sort |
photonic crystal fiber metalens |
publisher |
De Gruyter |
series |
Nanophotonics |
issn |
2192-8606 2192-8614 |
publishDate |
2019-02-01 |
description |
Conventional optical fiber has excellent performance in guiding light, which has been widely employed for long-distance optical communication. Although the optical fiber is efficient for transmitting light, its functionality is limited by the dielectric properties of the core’s and cladding’s materials (e.g. Ge-doped-silica and silica glasses). The spot size of the transmitted light is diverging and restricted by the diffraction limit of the dielectric core, and the numerical aperture is determined by the refractive index of the fiber materials. However, the novel technology of metasurfaces is opening the door to a variety of optical fiber innovations. Here, we report an ultrathin optical metalens directly patterned on the facet of a photonic crystal optical fiber that enables light focusing in the telecommunication regime. In-fiber metalenses with focal lengths of 28 μm and 40 μm at a wavelength of 1550 nm are demonstrated with maximum enhanced optical intensity as large as 234%. The ultrathin optical fiber metalens may find novel applications in optical imaging, sensing, and fiber laser designs. |
topic |
metasurfaces photonic crystal fibers plasmonics fiber optics components |
url |
https://doi.org/10.1515/nanoph-2018-0204 |
work_keys_str_mv |
AT yangjingyi photoniccrystalfibermetalens AT ghimireindra photoniccrystalfibermetalens AT wupinchieh photoniccrystalfibermetalens AT gurungsudip photoniccrystalfibermetalens AT arndtcatherine photoniccrystalfibermetalens AT tsaidinping photoniccrystalfibermetalens AT leehowaihoward photoniccrystalfibermetalens |
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1717776624081960960 |